package com.cnc.servlet;

import com.alipay.api.AlipayApiException;
import com.alipay.api.AlipayClient;
import com.alipay.api.DefaultAlipayClient;
import com.alipay.api.request.AlipayTradePagePayRequest;
import com.cnc.utils.AlipayConfig;

import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;

@WebServlet("/pay")
public class PayServlet extends BaseServlet {

    protected void pay(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
        AlipayClient alipayClient = new DefaultAlipayClient(AlipayConfig.gatewayUrl, AlipayConfig.app_id, AlipayConfig.merchant_private_key, "json", AlipayConfig.charset, AlipayConfig.alipay_public_key, AlipayConfig.sign_type);

        //设置请求参数
        AlipayTradePagePayRequest alipayRequest = new AlipayTradePagePayRequest();
        alipayRequest.setReturnUrl("http://localhost:8080/day01_war_exploded/userCourse?flag=add&cid="
                +req.getParameter("cid")+"&uid="+req.getParameter("uid"));
        alipayRequest.setNotifyUrl(AlipayConfig.notify_url);

        String id = req.getParameter("id");
        String amount = req.getParameter("amount");
        String subject = req.getParameter("subject");

        //商户订单号，商户网站订单系统中唯一订单号，必填
        alipayRequest.setBizContent("{\"out_trade_no\":\""+ id +"\","
                + "\"total_amount\":\""+ amount +"\","
                + "\"subject\":\""+ subject +"\","
                + "\"product_code\":\"FAST_INSTANT_TRADE_PAY\"}");

        //若想给BizContent增加其他可选请求参数，以增加自定义超时时间参数timeout_express来举例说明
        //alipayRequest.setBizContent("{\"out_trade_no\":\""+ out_trade_no +"\","
        //		+ "\"total_amount\":\""+ total_amount +"\","
        //		+ "\"subject\":\""+ subject +"\","
        //		+ "\"body\":\""+ body +"\","
        //		+ "\"timeout_express\":\"10m\","
        //		+ "\"product_code\":\"FAST_INSTANT_TRADE_PAY\"}");
        //请求参数可查阅【电脑网站支付的API文档-alipay.trade.page.pay-请求参数】章节

        //请求
        String result = null;
        try {
            result = alipayClient.pageExecute(alipayRequest).getBody();
        } catch (AlipayApiException e) {
            e.printStackTrace();
        }

        resp.getWriter().println(result);
        //输出
    }
}
